The Shennan Oilfield Injection Patterns And Development Methods To Adjust

The Shennan Oil field locates in the southern of the anticline belt of the east depression of Hebei Province of ShenZhou City, the verification oil-bearing area is 9.3 Km2 Reserves is 1618×104t.Ze10&Ze70 block, Shennan is in middle period of development of the oil field, due to the complex structure, broken pieces of broken, low level of understanding interconnectivity reservoir, with low level of reservoirs, crude oil viscosity, cause water breakthrough, water rising fast, injection low efficiency, formation pressure drop quickly, reservoir yields rapidly. Shennan oil field became the low effect development oil reservoir, This didn't meet with the current "economic benefit cored" developing Policy.Every kind of question exposed, through the development process embodied a concentrated reflection the deficiency knowledge to the structure,the reservoir evaluation,and unsuccessful research to oil well network and water-flooding adaptability. Therefore, enhanced the deep level geology Comprehensive research, Put forward suitability managing and reforming, Program had become the important factor to solve Shennan oil-field development problems.In order to change the Passive situation, we launched multi- aspects geological research.1) The study on the production characteristics and the effect of development, combined oil well network and adaptability evaluation of water-flooding pattern-determinatio n of reasonable well pattern density and reasonable injection-production ratio.2) Based on the moving gel system research and Numerical simulation study, identify the moving the gel system and the best injection scheme.3) At last, adjustment scheme were made on the basis of the former studying, and predicted the development index.4) To evaluate the effect of adjustment scheme,we had accomplished reformed measure working quantities together 57wells. The Production a day of the fault block increased from original 268 t per day to 362 t per day, and the producing velocity was speeded up from original 0.4%to 0.82%.2009 Shennan oilfield water-diversion comprehensive management measures of a total of increasing oil production 1.4437×104t.